Apparatus for reducing the length of recoil in guns



E. SCHNEIDER. APPARATUS FOR REDUCING THE LENGTH OF RECOIL IN GUNS] APPLICATION HLEDJUNEQ. 1921.

Patented Nov. 7 1922.

2 SHEETS-SHEET 1.

-E;.SCHN"EI DER I v APPARATUS FOR REDUCING THE LENGTH YOF.RECOIIL m e'u ws.

APPLICATION H LED JUNEQ, 1921;: I Patented Nov. .7, 1922 EUGENE SCHNEIDER, OF PARIS, FRANCE, ASSIGNOR TO SCHNEIDER & CIE.,-OF PARIS, FRANCE, A LIMITED JOINT-STOCK COMPANY OF FRANCE.

. APPARATUS FOR REDUCING THE LENGTH OF RECOIL IN GUNS.

Application filed June 9, 1921.

To all whom it may concern:

Be it known that I, EUGENE SCHNEIDER, citizen of the Republic of France, resident of 42, Rue dAnjou, Paris, France, have invented new and useful Improvements in Apparatus for Reducing the Length of Recoil in Guns, which invention is fully set forth in the following specification.

This invention has for its object to provide an improved apparatus of the kind described in an earlier Patent numbered 1,363,058, for utilizing the gases of explosion in guns for the purpose of reducing the length of the recoil in such guns.

The essential characteristic feature of the apparatus described in the aforesaid earlier patent consists in this, that a tubularmember, fixed on the muzzle of the gun barrel and suitably perforated for allowing the gases to escape before the projectile leaves the muzzle of the gun, is provided in its longitudinal inner wall with continuous longitudinal partitions for guiding, without play,

verging-convergingdiverging element and p the driving band of the projectile until the latter has passed completely out of the said tubular member.

In one of the constructional forms described in the aforesaid earlier patent, the

tubular member or gas chamber is cylindrical and is formed with a series of rifle grooves in prolongation of the rifle grooves of the inner tube of the gun barrel.

In another constructional form guide means is employed consisting of rectilinear partitions or ribs projecting from the inner wall of the tubular member, the diameter of these partitions being equal to the internal diameter of the gun rifle grooves.

A constructional. form of the present invention is illustrated in detail in the ac-- companying drawings, in which Fig. l is a longitudinal sectional elevation taken along the inner tube of the gun bar'- rel on the line 1-1 of Fig. 2, a portion of member G-I-I being broken away.

Figs. 2, 3, and 4 are sections respectively on the lines 2 -2, 3-3 and 4-4 of Fig. 1.

In this constructional form the tubular member which is fixed to the end'of the muzzle of the gun barrel C, comprises a diin continuation of this first element in which the-projectile, according to the invention described in the aforesaid earlier patent, is guided without play by means of continuous Serial No. 476,299.

ribs formed in prolongation or not in prolongation of the rifle grooves of the gun barrel, there is arranged a second element whose central portion forms a cylindrical guidance for the projectile, whilst at its periphery there is provided an annular orifice for the escape of the ases that flow in the dlverglng-convergingiverging element between the guide ribs.

In practice, the element that constitutes the diverging-converging-diverging device is composed of two sections A and B connected together. The section A, containing the diverging portion a which joins the in ner wall 0 of the gun barrel, is connected to the section B that contains the convergingdiverging portions bb The section B, in which the section A is fitted, is screwed by means of a rear part B serving as a nut, upon a divided sleeve D which surrounds the muzzle of the gun barrel. The two half sleeves D are formed at the rear with flanges d for connecting them together by means of bolts E.

On the inner wall of the diverging-converging-diverging device, constituted by the assemblage of the two sections A and B, there are formed guide ribs F, the inner edges 7 of which constitute in fact lands suitably spaced apart of a common cylinder, the radius of said cylinder being approximatively equal to the radius of the driving band of the projectile. The gases pass freely through the spaces between the ribs F and flow into the annular exhaust channel 9 that is formed in the end member or plug G-H arranged as a continuation of the diverging portion 6 In order to facilitate manufacture, the plug G-H is made in two parts. A cylindrical passage G is provided in the central portion G, this passage having a diameter approximatively equal to that of the driving band of the projectile.

The second portion'H is composed of two rings connected together by a number of arms h. The inner walls of these rings are formed as nuts adapted to screw respectively upon the portion G and the section B which are suitably screw-threaded for this purose.

As shown in Fig. 4 the ribs F are bevelled at the points where they open into the passage The arms it have preferably a fuselage-shaped section in order to facilitate the discharge of the gases, as shown in laims:

1. In a device of the class described, the combination of a diverging-converging-diverging element having longitudinally extending guide ribs, a sleeve securing said element to the muzzle of a gun in axial alinement therewith, an end member hav ing an axial passage therethrough secured to said element, and an exhaust channel in said end member.

2. In a device of the class described, the combination of a gas and shell directing device having an axial passage therethrough, said device comprising an inner diverging member and an outer converging-diverging element, a sleeve for securing said device to the muzzle of a gun, an end member having an axial passage therethrough secured to said element, and an exhaust channel in said end member.

3. In a device of the class described, the combination of a gas and shell directing device having an axial passage therethrough, said device comprising an inner diverging member and an outer converging-diverging element, a sleeve for securing said device to the muzzle of a gun, and a gas and shell directing end member, said endmember comprising an inner portion and an outer portion having a plurality of fuselage-shaped arms,

4. In a device of the class described, the combination of a gas and shell directing device having longitudinally extending guide ribs, the outer ends of said ribs being beveled, a divided sleeve for securing said device to the muzzle of a gun, and an end member having threaded engagement with said device, the end member comprising an 1 ,asaoea inner portion having an axial passage in alinement with the bore of said gun, and an outer portion having a plurality of arms.

5. In a device of the class described, the

combination of a member having converging-diverging inner wall surfaces provided with longitudinally extending ribs, an element having a diverging inner-wall surface concentric with said converging-diverging surfaces, a plug having threaded engagement With said member, and a sleeve for securing said member to the muzzle of a gun.

6. An apparatus for diminishing the recoil of a gun which consists of a convergingdiverging member having guide ribs formed in the inner Wall thereof, a diverging member removably secured in said first-mentioned member, an end member secured to said first-named member, an exhaust channel in said end member, and a sleeve for securing said first-named member to the muzzle of a gun barrel.

7. An apparatus for diminishing the recoil of a gun which cons'sts of a convergingdiverging member having ribs formed in the inner wall thereof, said ribs being adapted to guide the driving band of a projectile, a diverging member removably secured in said first-mentioned member, an end member secured to said first-named member an exhaust channel in said end member, and a sleeve for securing said first-named member to the muzzle of a gun barrel.

In testimony whereof I have signed this specification.

EUGENE SCHNEIDER.

Witnesses ANDRE MosTroKER, LoUIs GARDE'I. 

